Operation Manual – MSTPH3C S5600 Series Ethernet Switches Chapter 1 MSTP Configuration1-42Similarly, a port on an RSTP-enabled switch operating as an upstream switch turns tothe STP-compatible mode when it has an STP-enabled switch connected to it. Whenthe STP enabled downstream switch is then replaced by an MSTP-enabled switch, theport cannot automatically transit to the MSTP-compatible mode. It remains in theSTP-compatible mode. In this case, you can force the port to transit to theMSTP-compatible mode by performing the mCheck operation on the port.1.5.1 Configuration PrerequisitesMSTP runs normally on the switch.1.5.2 Configuration ProcedureYou can perform the mCheck operation in the following two ways.I. Perform the mCheck operation in system viewFollow these steps to perform the mCheck operation in system view:To do... Use the command... RemarksEnter system view system-view —Perform the mCheckoperationstp [ interfaceinterface-list ] mcheck RequiredII. Perform the mCheck operation in Ethernet port viewFollow these steps to perform the mCheck operation in Ethernet port view:To do... Use the command... RemarksEnter system view system-view —Enter Ethernet port view interface interface-typeinterface-number —Perform the mCheckoperation stp mcheck Required1.5.3 Configuration Example# Perform the mCheck operation on GigabitEthernet 1/0/1.1) Perform this configuration in system view system-view[Sysname] stp interface GigabitEthernet 1/0/1 mcheck2) Perform this configuration in Ethernet port view system-view
